package org.example.springbootproject.controller;

import jakarta.validation.constraints.Pattern;
import org.example.springbootproject.pojo.Result;
import org.example.springbootproject.pojo.User;
import org.example.springbootproject.service.UserService;
import org.example.springbootproject.utils.JwtUtil;
import org.example.springbootproject.utils.Md5Util;
import org.example.springbootproject.utils.ThreadLocalUtil;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "\\S{5,16}$")String username, @Pattern(regexp = "\\S{5,16}$")String password){
       //查询用户
        User u = userService.findByUserName(username);
        if(u == null){
            //没有占用
            //注册
            userService.register(username,password);
            return Result.success();
        }else{
            //占用
            return Result.error("用户名已被占用");
        }
    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "\\S{5,16}$")String username, @Pattern(regexp = "\\S{5,16}$")String password){
        //根据用户名查询用户
        User loginUser = userService.findByUserName(username);
        //判断该用户是否存在
        if(loginUser == null) {
            return Result.error("用户名错误");
        }
        //判断密码是否正确
        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginUser.getId());
            claims.put("username", loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(){
        Map<String, Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user = userService.findByUserName(username);
        return Result.success(user);
    }

    @PutMapping ("/upDate")
    public  Result upDate(@RequestBody @Validated User user){
        userService.upDate(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params){
        //校验参数
        String username = params.get("username");
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }

        User loginUser = userService.findByUserName(username);
        if(loginUser == null){
            return Result.error("用户名填写不正确");
        }
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }

        if (!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }
        //调用service完成密码更新
        userService.upDatePwd(newPwd,username);
        return Result.success();
    }
}
